<template>
  <div>
    <!-- 面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域-->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!--用户列表区域-->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!--修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮   -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!--分页区域  -->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户的对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
      <!--内容主题区域-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
    </el-dialog>
    <!--修改用户的对话框-->
    <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
  </span>
    </el-dialog>
    <!--  分配角色的对话框  -->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色: {{ userInfo.role_name }}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    let checkEmail = (rule, value, cb) => {
      //验证邮箱的正则
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) {
        //合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }
    //验证手机号的规则
    let checkMobile = (rule, value, cb) => {
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前显示多少条数据
        pagesize: 2,
      },
      userlist: [],
      total: 0,
      //控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '用户名的长度在3~10之间', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 3, max: 10, message: '密码的长度在6~15之间', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: "blur"}
        ],
        mobile: [
          {required: true, message: '请输入手机号码', trigger: 'blur'},
          {validator: checkMobile, trigger: "blur"}
        ]
      },
      //控制修改用户对话框显示与隐藏
      editDialogVisible: false,
      //查询到的用户信息对象
      editForm: {},
      //修改表单的验证规则对象
      editFormRules: {
        email: [
          {required: true, message: '请输入用户邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: "blur"}
        ],
        mobile: [
          {required: true, message: '请输入用户手机', trigger: 'blur'},
          {validator: checkMobile, trigger: "blur"}
        ]
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配权限角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      roleList: [],
      //已选中的角色id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const {data: res} = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取失败')
      }
      this.userlist = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    //监听 pagesize 改变的事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    //监听页码值改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听 switch 开关状态的改变
    async userStateChanged(userinfo) {
      console.log(userinfo)
      const {data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新状态成功')
    },
    //监听添加用户对话框关闭的时间
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    //点击确认按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        //可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('users', this.addForm)

        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }

        this.$message.success('添加用户成功')
        //隐藏添加用户的对话框
        this.addDialogVisible = false
        //重新获取用户列表数据
        this.getUserList()
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      //console.log(id)
      const {data: res} = await this.$http.get('users/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 发起修改用户信息的数据请求
        const {data: res} = await this.$http.put('users/' +
            this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        //关闭对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList()
        //提升修改成功
        this.$message.success('更新用户信息成功')
      })
    },

    //根据ID删除用户的对应信息
    async removeUserById(id) {
      // console.log(id)
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      //如果用户确认删除则返回值为字符串 confirm
      //如果用户取消了删除，则返回值为字符串 cancle
      // console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      const {data: res} = await this.$http.delete('users/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败!')
      }

      this.$message.success('删除用户成功!')
      this.getUserList()
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      //在展示对话框之前获取所有角色的列表
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>